Generic name of Snus is Zolpidem Tartrate Tablets, which can make you sleep after taking it, but the short sleep may be caused by the emergence of drug resistance, drug failure or complications. Resistance: If a patient has been taking the drug for a long time because of insomnia, resistance to the drug will develop over time, which will affect the therapeutic effect of the drug. Drug failure: long-term insomnia patients may have the habit of storing drugs at home, should check the expiration date of the drug before taking the drug to see if it is within the shelf life, if the drug expires, not only the effectiveness of the drug greatly reduced, and may even produce toxicity. Complications: insomnia is a common symptom of psychiatry, if insomnia combined with depression, anxiety and other psychiatric disorders, simply taking zolpidem tartrate tablets can not improve the symptoms of insomnia. The application of drugs need to strictly follow the doctor’s instructions, feel uncomfortable in the process of taking the drug, should immediately stop the drug to consult a doctor.